In Edge 129, it appears that MS has broken WebGL in some contexts. Opening Google Maps results in the tab instantly crashing with error code 6. Chrome and other chromium based browsers are fine, so this appears to be isolated to Edge.
This doesn't seem to be present in the native packaged version of Edge. Requires further investigation as to why this occurs in the Flatpak'ed version.
In Edge 129, it appears that MS has broken WebGL in some contexts. Opening Google Maps results in the tab instantly crashing with error code 6. Chrome and other chromium based browsers are fine, so this appears to be isolated to Edge.